Imprint

Who runs FormatOnce.

Last updated 17 September 2026.

This page identifies the company that operates FormatOnce.com and explains how to reach us about the site, its content or a legal matter.

Operator and registration

FormatOnce.com is operated by:

Black Sheep Digital Ltd
71–75 Shelton Street
Covent Garden
London WC2H 9JQ
United Kingdom

Black Sheep Digital Ltd is a private limited company incorporated and registered in England and Wales under company number 16989285. The address above is our registered office and the correct address for formal notices and service of documents. It is an office address, not a public walk-in support desk.

If you need further company information for a specific legal or compliance purpose, write to us and tell us what you require it for.

Contact addresses

All correspondence about FormatOnce reaches the same mailbox. Using a clear subject line helps it get to the right person faster.

We cannot accept files for processing by email: the tools run in your own browser, and we have no access to the files that stay on your device. Please do not attach original or confidential documents to a support message.

What this imprint covers

This imprint applies to the website published at FormatOnce.com and its subpages, including the six file tools, the informational pages and these legal pages. It does not cover third-party websites we link to, or software libraries distributed under their own licences and used inside the site.

Relationship to the other Once sites

FormatOnce is one of several small, single-purpose web tools published by the same operator, alongside attestonce.com, qrcodeonce.com, proposalonce.com and vcardonce.com. They share a visual style and an operator, but each site is a separate product with its own pages and its own legal documents. FormatOnce has no user accounts, and it does not share a sign-in or a user account with any of the other sites.

Intellectual property and security notices

The name FormatOnce, the site design, the text on these pages and the code written for this site belong to Black Sheep Digital Ltd, except for third-party open source components, which remain with their authors under their respective licences.

If you believe content on this site infringes your rights, send a notice to the IP address above that identifies the material, the page it appears on, the right you hold and your contact details. If you have found a security issue, report it privately to the security address first and give us a reasonable opportunity to fix it before disclosing it publicly.

Responsibility for content

We are responsible for our own content on this site. External sites we link to are controlled by their operators, and their content can change after we link to it. Our responsibility for linked content is governed by the applicable law and by the Terms of Use. If a link here leads somewhere unlawful or broken, please tell us and we will review it.

The conditions on which the tools are provided — including warranties, availability and the limits of our liability — are set out in the Terms of Use. How we handle data is described in the Privacy Notice.